Pushpin



Feb. 19, 1935. L. s. KRANTZ 1,991,561

PUSHPIN Filed Oct. 20, 1935 INVENTOR ATTORNEY Lewis 8.Krantz PatentedFeb. 19, 1935 PATENT OFFICE PUSHPIN Lewis S. Krantz,

Application October 20,

3 Claims.

This invention relates to push pins or thumb tacks, and moreparticularly to a push pin having a non-breakable head.

A further object is to provide a push pin of the above nature in whichthe head is made of molded or fabricated flexible tough material, suchas celluloid, and which will permit the pin to be driven into a wall orother support by a hammer or similar instrument without breaking orshattering.

.A further object is to provide a push pin of the above nature in whicha hardened steel pin is embedded in the flexible head in' such a mannerthat it will be securely held in position.

A further object is to provide a device of the above nature which willbe'simple in comtruction, inexpensive to manufacture, easy to manipu-Fig. 3 is a detail perspectiveview of the steel pin 1 employed.

Previous forms of push pins now on the market were provided with glassheads in which the steel pin was either embedded during the process ofmolding the glass, or cemented in a hollow socket formed in the head.Such constructions were notonly expensive to manufacture but weresubject to the disadvantage that the glass head was likely to crackor'splinter during the cooling after the molding process, or while thepin was being pushed into thewall. In the type where the pin wascemented in place, the cement was quite apt to loosen and cause the headto fall off. 7 By means of the present invention. the above and otherdisadvantages have been avoided, and a push pin has been provided inwhich the head not only is unbreakable, but cannot possibly fall off thepin.

Referring now to the drawing'in' which like reference numerals denotecorresponding parts throughout the several views, the numeral 10indicates the head of a push pin, and 11 the pointed pin afiixedthereto. The head 10 is made substantially spool-shaped in form and ispreferably constructed oftransparent or translucent celluloid, but headsof other non-breakable flexible material, either colored or'opaque, maybe Waterbury, Conn.

1933, Serial No. 694,441

employed within the spirit of this invention. The celluloid head may beeither formed in a mold or turned out on a lathe from a cellu oid rod.The pin 11 is preferably made of steel and is provided with a pointedend 12 and a blunt end 13, the latter being preferably formed by swagingto produce a pair of opposed flattened sections 14, the width of whichis greater than the diameter of the shank 15 of said pin adjacentthereto. 'After. the swaging operation, the entire pin is preferablyhardened by a suitable heat treatment to toughen it. a

The hardened pin 11 is attached to the head 10 by driving the blunt end13 thereof by the use of suitable tools, not shown, into the base of thehead 10, which may be held by other suitable. tools. The flexible natureof the celluloid head permits the entrance of the blunt end 13 of thepin without distorting the outer shape of the head 10. After theinsertion of said pin to the desired depth, the surrounding material ofthe celluloid will close in about the tapering rounded shank portion ofthe pin, which is smaller in diameter than the width of the blunt end13. A secure anchorage for the embedded pin will thus be formed, and itwill be understood that it will vbe practically impossible for the headto fall'ofi the pin in use.

While there has been disclosed in this specification one form in whichthe invention may be embodied, it is to be understood that this form isshown for the purpose of illustration only, and that the invention isnot to be limited to the specific disclosure but may be modified andembodied in various other forms Without departing from its spirit. Inshort, the invention includes all the modifications and embodimentscoming within the scope of the following claims.

Having thus fully described the invention, what is claimed as new, andfor which it is desired to secure Letters Patent, is:

1. Ina push pin, a head of flexible non-shatterable material, and ahardened steel pointed pin having an enlarged blunt end embedded in saidhead, said pin being driven into the solid material of and anchored insaid head by the automatic closing in of the flexible material of saidhead around the intermediate smaller section below said blunt end.

2. In a push pin, a celluloid head, a pointed steel tapered pin having abroadened flattened blunt end, said broadened portion being embedded inthe celluloid material of said head by driving it into a solid portionthereof and being anchored 3. In a push pin, a head of flexiblenon-shat-. 5 terable material, and a hardened steel pointed pin havingan enlarged out-of-round end embedded in said head, said pin beingdriven into the solid material of said head and anchored in said head bythe natural closing in of the flexible material a of said head aroundthe intermediate smaller section below said end.

LEWIS

